Irrespective of the source, pure sample of water always yields 88.89% mass of oxygen and 11.11% mass of hydrogen. This is explained by the law of:
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a
Conservation of mass
b
Constant composition
c
Multiple proportion
d
Constant volume
answer is B.
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Detailed Solution
According to law of constant composition, A given compound always contain elements in fixed ratio by mass, irrespective of origin or method of preparation.